Update mock avs links

[AntiD2ta]

Changes:

• Update mock-avs:
  • Links
  • Tag version
  • Usage in tests
• Use manifest.name for Instance ID.

Types of changes

Leave on the following list the types of changes introduced by this PR and remove
the ones that don't apply. Please also remove this line.

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)

Testing

Requires testing Yes

In case you checked yes, did you write tests? Yes

[adriantpaez]

I noticed that some test cases use const variables for the repo URL and version, while others do not. Do you think this is something we should enforce in all tests? If so, we could create an internal/mock_avs package that contains all the const values related to the mock-avs and mock-avs-pkg repositories for easy access in the tests

[adriantpaez]

I really like this new package for the mock-avs version management, nice!